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| Rev | Author | Line No. | Line |
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| 11 | daniel-mar | 1 | <?php |
| 2 | |||
| 3 | /* |
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| 4 | * VtsLDAPUtils - Simple LDAP helper functions |
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| 5 | * Copyright 2021 Daniel Marschall, ViaThinkSoft |
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| 6 | * Revision: 2021-06-11 |
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| 7 | * |
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| 8 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 9 | * you may not use this file except in compliance with the License. |
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| 10 | * You may obtain a copy of the License at |
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| 11 | * |
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| 12 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 13 | * |
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| 14 | * Unless required by applicable law or agreed to in writing, software |
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| 15 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 17 | * See the License for the specific language governing permissions and |
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| 18 | * limitations under the License. |
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| 19 | */ |
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| 20 | |||
| 21 | class VtsLDAPUtils { |
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| 22 | |||
| 23 | protected $conn = null; |
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| 24 | |||
| 25 | private static function _L($str, ...$sprintfArgs) { |
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| 26 | if (function_exists('_L')) { |
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| 27 | return _L($str, $sprintfArgs); |
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| 28 | } else { |
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| 29 | return my_vsprintf($str, $sprintfArgs); |
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| 30 | } |
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| 31 | } |
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| 32 | |||
| 33 | public static function getString($ldap_userinfo, $attributeName) { |
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| 34 | $ary = self::getArray($ldap_userinfo, $attributeName); |
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| 35 | return implode("\n", $ary); |
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| 36 | } |
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| 37 | |||
| 38 | public static function getArray($ldap_userinfo, $attributeName) { |
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| 39 | $ary = array(); |
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| 40 | if (isset($ldap_userinfo[$attributeName])) { |
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| 41 | $cnt = $ldap_userinfo[$attributeName]['count']; |
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| 42 | for ($i=0; $i<$cnt; $i++) { |
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| 43 | $ary[] = $ldap_userinfo[$attributeName][$i]; |
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| 44 | } |
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| 45 | } |
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| 46 | return $ary; |
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| 47 | } |
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| 48 | |||
| 49 | public function isMemberOfRec($userDN, $groupDN) { |
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| 50 | |||
| 51 | if (isset($userDN['dn'])) $userDN = $userDN['dn']; |
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| 52 | if (isset($groupDN['dn'])) $groupDN = $groupDN['dn']; |
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| 53 | |||
| 54 | if (!$this->conn) throw new Exception('LDAP not connected'); |
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| 55 | $res = ldap_read($this->conn, $groupDN, "(objectClass=*)"); |
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| 56 | if (!$res) return false; |
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| 57 | $entries = ldap_get_entries($this->conn, $res); |
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| 58 | if (!isset($entries[0])) return false; |
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| 59 | if (!isset($entries[0]['member'])) return false; |
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| 60 | if (!isset($entries[0]['member']['count'])) return false; |
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| 61 | $cntMember = $entries[0]['member']['count']; |
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| 62 | for ($iMember=0; $iMember<$cntMember; $iMember++) { |
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| 63 | $groupOrUser = $entries[0]['member'][$iMember]; |
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| 64 | if (strtolower($groupOrUser) == strtolower($userDN)) return true; |
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| 65 | if ($this->isMemberOfRec($userDN, $groupOrUser)) return true; |
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| 66 | } |
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| 67 | return false; |
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| 68 | } |
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| 69 | |||
| 70 | public function __destruct() { |
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| 71 | $this->disconnect(); |
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| 72 | } |
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| 73 | |||
| 74 | public function disconnect() { |
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| 75 | if ($this->conn) { |
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| 76 | //ldap_unbind($this->conn); // commented out because ldap_unbind() kills the link descriptor |
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| 77 | ldap_close($this->conn); |
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| 78 | $this->conn = null; |
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| 79 | } |
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| 80 | } |
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| 81 | |||
| 82 | public function connect($cfg_ldap_server, $cfg_ldap_port) { |
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| 83 | $this->disconnect(); |
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| 84 | |||
| 85 | // Connect to the server |
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| 86 | if (!empty($cfg_ldap_port)) { |
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| 87 | if (!($ldapconn = @ldap_connect($cfg_ldap_server, $cfg_ldap_port))) throw new Exception(self::_L('Cannot connect to LDAP server')); |
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| 88 | } else { |
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| 89 | if (!($ldapconn = @ldap_connect($cfg_ldap_server))) throw new Exception(self::_L('Cannot connect to LDAP server')); |
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| 90 | } |
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| 91 | ldap_set_option($ldapconn, LDAP_OPT_PROTOCOL_VERSION, 3); |
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| 92 | ldap_set_option($ldapconn, LDAP_OPT_REFERRALS, 0); |
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| 93 | |||
| 94 | $this->conn = $ldapconn; |
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| 95 | } |
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| 96 | |||
| 97 | public function login($username, $password) { |
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| 98 | return @ldap_bind($this->conn, $username, $password); |
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| 99 | } |
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| 100 | |||
| 101 | public function getUserInfo($userPrincipalName, $cfg_ldap_base_dn) { |
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| 102 | $cfg_ldap_user_filter = "(&(objectClass=user)(objectCategory=person)(userPrincipalName=".ldap_escape($userPrincipalName, '', LDAP_ESCAPE_FILTER)."))"; |
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| 103 | |||
| 104 | if (!($result = @ldap_search($this->conn,$cfg_ldap_base_dn, $cfg_ldap_user_filter))) throw new Exception(self::_L('Error in search query: %1', ldap_error($this->conn))); |
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| 105 | $data = ldap_get_entries($this->conn, $result); |
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| 106 | $ldap_userinfo = array(); |
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| 107 | |||
| 108 | if ($data['count'] == 0) return false; |
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| 109 | $ldap_userinfo = $data[0]; |
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| 110 | |||
| 111 | // empty($ldap_userinfo) can happen if the user did not log-in using their correct userPrincipalName (e.g. "username@domainname" instead of "username@domainname.local") |
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| 112 | return empty($ldap_userinfo) ? false : $ldap_userinfo; |
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| 113 | } |
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| 114 | |||
| 115 | } |